<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>animated-fill-button</title>
    <style>
        .animated-fill-button {
            padding: 10px 25px;
            background-color: #fff;
            color: rgba(0, 0, 0,.85);
            border: 1px solid #dedfdf;
            cursor: pointer;
            border-radius: 5px;
            transition: all .3s ease-in-out;
        }
        .animated-fill-button:hover {
            background-color: #2396ef;
            color:#fff;
            border-color: #46a8f3;
        }
    </style>
</head>
<body>
    <button class="animated-fill-button">submit</button>
</body>
</html>